PCB Design & Code For Switch Matrix/Keypad Data Logger
$250-750 USD
Teslim sırasında ödenir
A PCB design that can have a switch matrix soldered to it. A microcontroller on the board will log and timestamp when a switch is activated. The data will be recorded to a text file on microsd [url removed, login to view] board must have solder pads for switch matrix and battery, and a connector slot for the microsd card.
The power is to be supplied by a [url removed, login to view] or less battery.
Microcontroller should be ATTiny or ATmega with Atmel picoPower.
The switch matrix is 4x4.
PCB design Maximum dimensions (MAX, smaller is better)
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Length:40mm
Witdh:10mm
Max height (board + IC components): 2mm, ideally board will be FPCB.
Software:
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When power is first connected the microcontroller must look/wait for a Fat16/32 formatted microsd card. When found settings should be attempted to be read from a "[url removed, login to view]" file located in the root directory. A new text file is then created with the date/time as a filename.
After setup the microcontroller should wait for and log/timestamp any switch activations to the created text file.
I would like the program to be developed in Arduino/C ideally.
All reasonable power optimizations should be taken. Key activations are made manually thus the system is not required to run extremely fast.
You will provide me with:
BOM
PCB design (Eagle/KiCad)
Gerber files.
Schematic.
Well commented Software code.
Proje NO: #5021836